You volunteer as the student tech aide at the Cedarhollow Public Library. Staff connect their machines to the WPA3 network CedarNet-Staff; patrons use CedarNet-Public. This morning the roving inventory laptop SHELF-SCAN-2 (used to scan barcodes around the Reading Room) won't get online — the librarian says "it can't even see any Wi-Fi." The circulation desk PC CIRC-DESK-1 is reportedly fine. Work the structured troubleshooting method: establish a known-good baseline, isolate the fault, find the root cause, fix it, then verify.